20121201244 has 12 divisors (see below), whose sum is σ = 35324603104. Its totient is φ = 10028457504.

The previous prime is 20121201227. The next prime is 20121201263. The reversal of 20121201244 is 44210212102.

It is a super-3 number, since 3×20121201244³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8034372 + ... + 8036875.

Almost surely, 2^20121201244 is an apocalyptic number.

It is an amenable number.

20121201244 is a deficient number, since it is larger than the sum of its proper divisors (15203401860).

20121201244 is a wasteful number, since it uses less digits than its factorization.

20121201244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071564 (or 16071562 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20121201244 its reverse (44210212102), we get a palindrome (64331413346).

The spelling of 20121201244 in words is "twenty billion, one hundred twenty-one million, two hundred one thousand, two hundred forty-four".